rockbox/firmware/target/arm/as3525/app.lds
Rafaël Carré f504153857 FS#10048 : enable MMU and data cache on Sansa AMS to give a major speed up
- cache IRAM and DRAM
- map IRAM just next to DRAM to remove the need for -mlong-calls and reduce binsize
- tweak delays in Fuze button code
- tweak delays in Clip button code (down button sometimes doesn't respond anyway : an alternate driver is being worked on)

Before reporting any problem, please check your filesystem or format your player from the OF

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21228 a1c6a512-1295-4272-9138-f99709370657
2009-06-08 23:05:33 +00:00

158 lines
2.7 KiB
Text

#include "config.h"
#include "cpu.h"
ENTRY(start)
OUTPUT_FORMAT(elf32-littlearm)
OUTPUT_ARCH(arm)
STARTUP(target/arm/crt0.o)
#define PLUGINSIZE PLUGIN_BUFFER_SIZE
#define CODECSIZE CODEC_SIZE
#ifdef DEBUG
#define STUBOFFSET 0x10000
#else
#define STUBOFFSET 0
#endif
#define IRAMORIG IRAM_ORIG
#define DRAMORIG (DRAM_ORIG + STUBOFFSET)
/* End of the audio buffer, where the codec buffer starts */
#define ENDAUDIOADDR (DRAMORIG + DRAMSIZE)
#ifdef AMS_LOWMEM
#define DRAMSIZE (DRAM_SIZE - STUBOFFSET - PLUGINSIZE - TTB_SIZE)
#define CODECORIG (IRAMORIG + (IRAM_SIZE - CODEC_SIZE))
#define IRAMSIZE (IRAM_SIZE - CODEC_SIZE)
#else
#define DRAMSIZE (DRAM_SIZE - STUBOFFSET - PLUGINSIZE - CODECSIZE - TTB_SIZE)
#define CODECORIG (ENDAUDIOADDR)
#define IRAMSIZE (0x20000)
#endif
/* Where the codec buffer ends, and the plugin buffer starts */
#ifdef AMS_LOWMEM
#define ENDADDR (ENDAUDIOADDR)
#else
#define ENDADDR (ENDAUDIOADDR + CODECSIZE)
#endif
MEMORY
{
#ifdef AMS_LOWMEM
CODEC_IRAM : ORIGIN = CODECORIG, LENGTH = CODEC_SIZE
#endif
IRAM : ORIGIN = IRAMORIG, LENGTH = IRAMSIZE
DRAM : ORIGIN = DRAMORIG, LENGTH = DRAMSIZE
}
SECTIONS
{
loadaddress = DRAM_ORIG;
.vectors :
{
_vectors_start = .;
*(.init.text)
} > DRAM
.text :
{
_loadaddress = .;
_textstart = .;
*(.text)
*(.text*)
*(.glue_7)
*(.glue_7t)
. = ALIGN(0x4);
} > DRAM
.rodata :
{
*(.rodata*)
. = ALIGN(0x4);
} > DRAM
.data :
{
*(.data*)
. = ALIGN(0x4);
} > DRAM
/DISCARD/ :
{
*(.eh_frame)
}
.iram :
{
_iramstart = .;
*(.icode)
*(.irodata)
*(.idata)
. = ALIGN(0x4);
_iramend = .;
} > IRAM AT> DRAM
.ibss (NOLOAD) :
{
_iedata = .;
*(.qharray)
*(.ibss)
. = ALIGN(0x4);
_iend = .;
} > IRAM
_iramcopy = LOADADDR(.iram);
.stack (NOLOAD) :
{
*(.stack)
stackbegin = .;
. += 0x2000;
stackend = .;
} > DRAM
.bss (NOLOAD) :
{
_edata = .;
*(.bss*)
*(COMMON)
. = ALIGN(0x4);
_end = .;
} > DRAM
.audiobuf (NOLOAD) :
{
. = ALIGN(4);
_audiobuffer = .;
audiobuffer = .;
} > DRAM
.audiobufend ENDAUDIOADDR (NOLOAD) :
{
audiobufend = .;
_audiobufend = .;
} > DRAM
.codec CODECORIG (NOLOAD) :
{
codecbuf = .;
_codecbuf = .;
#ifdef AMS_LOWMEM
} > CODEC_IRAM
#else
} > DRAM
#endif
.plugin ENDADDR (NOLOAD) :
{
_pluginbuf = .;
pluginbuf = .;
}
}